linux-kernel - Re: [PATCH 05/23] i2c: davinci: Remove #ifdef guards for PM related functions

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Date:   Thu, 6 Jul 2023 10:15:36 +0800
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Paul Cercueil <paul@...pouillou.net>
CC:     Wolfram Sang <wsa@...nel.org>, <linux-i2c@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 05/23] i2c: davinci: Remove #ifdef guards for PM related
 functions

On Wed,  5 Jul 2023 22:42:56 +0200
Paul Cercueil <paul@...pouillou.net> wrote:

> Use the new PM macros for the suspend and resume functions to be
> automatically dropped by the compiler when CONFIG_PM or
> CONFIG_PM_SLEEP are disabled, without having to use #ifdef guards.
> 
> This has the advantage of always compiling these functions in,
> independently of any Kconfig option. Thanks to that, bugs and other
> regressions are subsequently easier to catch.
> 
> Note that the behaviour is slightly different than before; the original
> code wrapped the suspend/resume with #ifdef CONFIG_PM guards, which
> resulted in these functions being compiled in but never used when
> CONFIG_PM_SLEEP was disabled.
> 
> Now, those functions are only compiled in when CONFIG_PM_SLEEP is
> enabled.
> 
> Signed-off-by: Paul Cercueil <paul@...pouillou.net>
Slightly odd combination of callbacks in this driver, but your change
looks good to me.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>